Sarah Silverman, Lee Pace and Dean Norris have joined the cast of Focus Features’ Book of Henry, the new movie from Jurassic World director Colin Trevorrow, THR has confirmed.

Trevorrow will direct Henry before moving on to helm Star Wars: Episode IX.

The film represents a change of pace for the director. Although plot details are being kept under wraps, it is known to be a dark family dramedy, centering on a mother and her genius son.

Naomi Watts, young actor Jacob Tremblay (who stars in the awards buzz-generating Room) and St. Vincent actor Jaeden Lieberher are already on board.

Character details for the roles that Silverman, Pace and Norris will play were not revealed.

Silverman, repped by UTA and Thruline Entertainment, is earning applause for her dramatic turn in I Smile Back, which screened at the Toronto Film Festival after debuting at the Sundance Film Festival.

Pace, repped by CAA and Management 360, recently played the villain Ronan the Accuser in last summer’s Guardians of the Galaxy and also stars in the AMC series Halt and Catch Fire.

Norris, repped by CAA and Industry Entertainment and best known for his work on Breaking Bad, just joined the cast of New Line’s comedy Fist Fight.